Finding the Fourth Proportional to 1,179.32, 1,770.12 and 631.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,179.32 : 1,770.12 = 631.89 : x
2. Step 2: Convert to fraction form
   1,179.32/1,770.12 = 631.89/x
3. Step 3: Cross multiply
   1,179.32x = 1,770.12 × 631.89
4. Step 4: Simplify right side
   1,179.32x = 1,118,521.13
5. Step 5: Solve for x
   x = 1,118,521.13/1,179.32
6. Step 6: Final answer
   x = 948.45